3 3 7 x 10 Bq 4 3 7 10 Bq The half life of 92U238 undergoing a decay 4 5 x 100 years The activity of 4 g sample of 92 UZ is INCERT Pg 448 1 1 23 10 Bq 2 1 23 x 105 Bq 3 4 9 10 Bq 4 49 1 1 mg radium has 2 68 x 10 8 atoms Its half radium atoms 105 Bq IT JER 12 The ener fission is 1 200 M 2 235 M 3 20 M 4 100 13 Pick out following 1 Be acc
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